William l



(No Model.)

W. L. SAUNDERS.

QUARRY DRILL FRAME.

Patented 20, 1836;; Fig.1.

: i E I C 1 I: "I I I I l a-l wawtoz mum? Saunders n PETERS, Phnkn-Ukhngmpher. Washington. m c I UNITED STATES PATENT Gretna.

\VILLIAM L. SAUNDERS, OF JERSEY CITY, NE\V JERSEY.

QUARRY-DRILL FRAME.

SPECIFICATION forming part ofLetters Patent No. 340,251, dated April 20, 1886.

Application filed December 31, 1885. Serial No.1d7238. (No model.)

T all whom it may concern.-

. ments in quarry-drill frames; and it consists in so arranging the rack-bar upon which the drill is mounted that it is separable from and adjustable within the cross-heads to which the supporting-legs are secured, and also in so supporting the rack-bar within the cross-heads that it may be partially rotated therein, so as to bring the drill in any desired position from vertical to horizontal. The details of construction will be hereinafter set forth.

In the accompanying drawings, Figure l is a perspective View of my improved quarrydrill frame with the drill in a vertical position. Fig. 2 is an elevation of one of the cross-heads. Figs. 3 and 4 are details of one of the leg-clamps.

Similar letters denote like parts.

A is a bar of angle-iron, and B is a rack permanently secured against one flange thereof. 0 Care sectional circular bearings, through which pass the angle-bar A, which, as indicated, has a firm bearing therein, and is also suitably apertured to permit the passage of the rack. The bearings O are mounted in cross-heads D, being secured in position by the removable upper portion, 11, thereof, which, by means of suitable set-screws, E, can be loosened to permit the rotation of the circular bearing 0 and the axial adjustment of the bar within the cross-head, or readily displaced to allow the removal of the bearing 0, in whole or in part, and also the bar A, whenever desired. The cross-head is suitably apertured at its extremities to receive the legclamps F, which are short round-headed bolts formed with elongated apertures f, through which pass the legs G, which are then secured in position by means of set-screws g. The clamps F pass obliquely through the ends of the cross-heads, where they may then be secured by means of set-screws H. The legs are passed through their clamps and set outward and away from each other to give the desired stability to the frame, and then secured. in

position by means of their set-screws, which secure the legs in position, and at the same time draw the heads of the clamps tightly against the ends of the cross-heads. The set screws H may then set against the leg-clamps as an extraprecaution, although in many instances they may be dispensed with altogether.

Upon the frame thus formed is mounted any suitable form of drill, I, which is provided with suitable piniongi, mounted upon its saddle and and the cross heads, together with the legs,

may be placed in any position upon the bar, and the drill may be operated either between the two sets of legs, as here shown, or to the right or left of the legs, as desired. The purpose of this is to enable the drill to operate close to the corner and at the end of the bench.

Where it is desired to put in holes with the drill in a horizontal position on a line with the floor, the drill and bar are together swung on the two cross-pieces as axis, and lowered on the legs until the drill-cylinder nearly meets the floor. This is done by loosening the bolts on the top of the cross-pieces and leg-clamps, and pulling the drill over to any desired position.

In using the machine for broach-channeling, a line of holes is driven, leaving a dividingwall of about threc-quarters inch between the holes. hen these holes are completed to the depth and extent required, the rotation pawls are taken out from the back head of the cylinder, and the drill is made to break down the dividingwalls by means of a broach and without rotating the piston. 7

Having descri bed my invention, what I claim 1. In a quarry-drill frame, the combination of a bar, a drill mounted thereon, removable supports for the bar, and means for adjusting the bar both longitudinally and axially with in its supports, substantially as described.

2. In a quarry-drill frame, the combination of ahorizontal rack-bar, a drill mounted and moving thereon, removable end supports for the bar, and means, as described, for adjusti ing the bar both longitudinally and axially substantiallyas shown and described.

within its supports, as set forth. In testimony whereof I hereto atlix my sig- 3. In a quarry-drill frame, the combination nature in presence of two witnesses.

of a horizontal rack-bar vertically and longi- 7 v i w i tudinally adjustable en d supports therefor, "LIAM SAUNDERS divisible circular bearings for said bar mount- \Vitnesscs:

ed within the end supports and capable of J. CUYAS,

rotation therein, and a drill mounted and l --JOHN D. MILLER.

adapted to be moved laterally upon the bar, [0 

